Communication method and device

Abstract

A communication method and device relate to the field of communication. In the method, an uplink wake-up signal is sent, the uplink wake-up signal is used for waking up a first cell, the uplink wake-up signal carries first indication information, the first indication information indicates an expected period of a synchronous broadcast block of the first cell and / or a beam of the synchronous broadcast block, and the synchronous broadcast block of the first cell and / or a system information block are / is monitored. By adopting the method, the first cell can be awakened, and the requirements of the terminal equipment can be better met.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] As the fifth generation (5G) mobile communication technology is applied in various industries and popularized in various geographical regions, 5G technology is increasingly required to handle more advanced services and applications. At the same time, 5G networks are becoming more dense, using more antennas, larger bandwidths, and more frequency bands. In this environment, how to improve network energy saving in 5G systems has become one of the main research contents in the industry.

[0003] Most of the energy consumption in 5G systems currently comes from the radio access network, especially the active antenna unit. The power consumption of wireless access equipment can be divided into two parts: dynamic power consumption and static power consumption. Dynamic power consumption is only generated when data transmission / reception is in progress, while static power consumption is always generated even when data transmission / reception is not in progress. Therefore, it is necessary to introduce technology to reduce static power consumption without affecting user performance.

[0004] Currently, the terminal device can send an uplink wake-up signal to wake up the base station, but how to design the uplink wake-up signal and related mechanisms need further discussion. Summary of the invention

[0005] The present application provides a communication method and apparatus for realizing flexible wake-up of a base station to meet the needs of a terminal device.

[0006] In a first aspect, the present application provides a communication method, which can be performed by a terminal device or a module (such as a chip) in the terminal device. The method includes: sending an uplink wake-up signal, the uplink wake-up signal is used to wake up a first cell, the uplink wake-up signal carries first indication information, and the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; monitoring the synchronization broadcast block and / or system information block of the first cell.

[0007] By adopting the above method, the terminal device sends an uplink wake-up signal to wake up the first cell, and the uplink wake-up signal includes first indication information. The first indication information indicates the period and / or beam of the synchronous broadcast expected by the terminal device, so as to notify the network device of the period and / or beam of the synchronous broadcast expected by the terminal device, so that the synchronous broadcast block broadcasted by the network device can better meet the needs of the terminal device.

[0008] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0009] In one possible design, when sending an uplink wake-up signal, the uplink wake-up signal is sent according to configuration information of the uplink wake-up signal.

[0010] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0011] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of on-off keying OOK and orthogonal frequency division multiplexing OFDM, the multi-carrier amplitude shift keying ASK, multi-carrier frequency shift keying FSK, or OFDM.

[0012] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0013] With the above design, the terminal device determines whether to send an uplink wake-up signal based on the first information. When the terminal device meets any one or more of the information included in the first information, the terminal device sends an uplink wake-up signal.

[0014] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control RRC signaling.

[0015] In one possible design, after sending the uplink wake-up signal, the random access request message is sent to the first cell based on the monitored synchronization broadcast block and / or system information block of the first cell.

[0016] In one possible design, after sending an uplink wake-up signal, a first condition is met and the random access request message is sent to the first cell; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored.

[0017] With the above design, after the terminal device sends an uplink wake-up signal, if the first condition is met, the terminal device can directly send a random access request message to the first cell to wake up the first cell.

[0018] In one possible design, after sending an uplink wake-up signal, a first condition is met and the random access request message is sent to the second cell; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; after the random access process is completed, sending the identifier of the first cell to the second cell.

[0019] With the above design, after the terminal device sends an uplink wake-up signal, if the first condition is met, the terminal device can send a random access request message to the second cell to wake up the first cell through the second cell.

[0020] In one possible design, the second cell is a cell reselected by the terminal device or a designated cell.

[0021] In one possible design, third indication information is received from the first cell or the third cell, and the third indication information indicates at least one of the following: time-frequency resource information occupied by the random access request message, the root sequence index of the random access request message, the random access sequence index, or the beam association configuration of the downlink low-power synchronization signal and the random access sequence.

[0022] In one possible design, after sending an uplink wake-up signal, a random access response message is received from the first cell based on the monitored synchronization broadcast block and / or system information block of the first cell, and the random access response message includes information of the uplink wake-up signal.

[0023] With the above design, the terminal device does not need to send a random access request message. The terminal device only sends an uplink wake-up signal. The uplink wake-up signal can achieve the function of the random access request message, thereby reducing the delay of the terminal device accessing the network.

[0024] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0025] In a second aspect, the present application provides a communication method, which can be performed by a network device or a module (such as a chip) in the network device. The method includes: receiving the uplink wake-up signal, the uplink wake-up signal is used to wake up the first cell, the uplink wake-up signal carries first indication information, and the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; broadcasting the synchronization broadcast block and / or system information block of the first cell.

[0026] By adopting the above method, the network device receives the uplink wake-up signal, and the network device can broadcast the synchronization broadcast block and / or system information block of the first cell to wake up the first cell. The uplink wake-up signal includes the first indication information, and the first indication information indicates the period and / or beam of the synchronization broadcast expected by the terminal device, so that the synchronization broadcast block broadcasted by the network device can better meet the needs of the terminal device.

[0027] In one possible design, when receiving the uplink wake-up signal, the uplink wake-up signal is received by an auxiliary receiver.

[0028] In one possible design, before broadcasting the synchronization broadcast block according to the uplink wake-up signal, the period of the synchronization broadcast block and / or the index of the synchronization broadcast block is determined according to the first indication information.

[0029] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0030] In one possible design, configuration information of the uplink wake-up signal is sent before sending the uplink wake-up signal.

[0031] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0032] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform that simultaneously adapts to OOK and OFDM, the multi-carrier ASK, multi-carrier FSK, or OFDM.

[0033] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0034] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control RRC signaling.

[0035] In one possible design, after broadcasting the synchronization broadcast block and / or system information block of the first cell according to the uplink wake-up signal, a random access response message is sent to the terminal device, and the random access response message includes information of the uplink wake-up signal.

[0036] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0037] In a third aspect, the present application provides a communication device, which includes a processing unit and a transceiver unit, wherein the processing unit calls the transceiver unit to execute sending an uplink wake-up signal, wherein the uplink wake-up signal is used to wake up a first cell, and the uplink wake-up signal carries first indication information, and the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; monitors the synchronization broadcast block and / or system information block of the first cell.

[0038] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0039] In one possible design, the transceiver unit is used to send the uplink wake-up signal according to the configuration information of the uplink wake-up signal when sending the uplink wake-up signal.

[0040] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0041] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of OOK and OFDM, the multi-carrier amplitude shift keying ASK, the multi-carrier frequency shift keying FSK, or OFDM.

[0042] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0043] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control RRC signaling.

[0044] In one possible design, the transceiver unit is used to send the random access request message to the first cell according to the monitored synchronization broadcast block and / or system information block of the first cell after sending the uplink wake-up signal.

[0045] In one possible design, the transceiver unit is used to send the random access request message to the first cell after sending an uplink wake-up signal, based on the first condition determined by the processing unit to be satisfied; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored.

[0046] In one possible design, the transceiver unit is used to send the random access request message to the second cell after sending an uplink wake-up signal, based on the processing unit determining that a first condition is met; wherein the first condition includes determining that a maximum number of times the uplink wake-up signal is sent, and that the synchronization broadcast block and / or system information block of the first cell is not heard; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and that the synchronization broadcast block and / or system information block of the first cell is not heard; after the random access process is completed, sending the identifier of the first cell to the second cell.

[0047] In one possible design, the second cell is a cell reselected by the terminal device or a designated cell.

[0048] In one possible design, the transceiver unit is used to receive third indication information from the first cell or the third cell, and the third indication information indicates at least one of the following: time-frequency resource information occupied by the random access request message, the root sequence index of the random access request message, the random access sequence index, or the beam association configuration of the downlink low-power synchronization signal and the random access sequence.

[0049] In one possible design, the transceiver unit is used to receive a random access response message from the first cell after sending an uplink wake-up signal according to the synchronization broadcast block and / or system information block of the first cell monitored, and the random access response message includes information about the uplink wake-up signal.

[0050] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0051] In a fourth aspect, the present application provides a communication device, which includes a processing unit and a transceiver unit, wherein the processing unit calls the transceiver unit to execute reception of the uplink wake-up signal, wherein the uplink wake-up signal is used to wake up a first cell, and the uplink wake-up signal carries first indication information, and the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; broadcasts the synchronization broadcast block and / or system information block of the first cell.

[0052] In one possible design, the transceiver unit is used to receive the uplink wake-up signal through an auxiliary receiver when receiving the uplink wake-up signal.

[0053] In one possible design, a processing unit is used to determine a period of the synchronization broadcast block and / or an index of the synchronization broadcast block according to the first indication information before broadcasting the synchronization broadcast block according to the uplink wake-up signal.

[0054] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0055] In one possible design, the transceiver unit is used to send configuration information of the uplink wake-up signal before sending the uplink wake-up signal.

[0056] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0057] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of OOK and OFDM, the multi-carrier ASK, multi-carrier FSK, or OFDM.

[0058] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0059] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control RRC signaling.

[0060] In one possible design, the transceiver unit is used to send a random access response message to the terminal device after broadcasting the synchronization broadcast block and / or system information block of the first cell according to the uplink wake-up signal, and the random access response message includes information of the uplink wake-up signal.

[0061] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0062] In a fifth aspect, the present application provides a communication device, which may be a first device, or a module or unit (for example, a chip, or a chip system, or a circuit) in the first device that corresponds one-to-one to the method / operation / step / action described in the first aspect or the second aspect, or may be capable of being used in combination with the first device.

[0063] In a sixth aspect, the present application provides a communication device comprising at least one processing element and at least one storage element, wherein the at least one storage element is used to store programs and data, and the at least one processing element is used to read and execute the programs and data stored in the storage element, so that any method described in any one of the above aspects of the present application is implemented.

[0064] In a seventh aspect, the present application further provides a computer program, which, when executed on a computer, enables the computer to execute any of the methods described in any of the above aspects.

[0065] In an eighth aspect, the present application provides a communication device, comprising: an interface circuit; the interface circuit is used to provide input and / or output of programs or instructions to at least one processor; the at least one processor is used to execute the program or instructions so that the communication device can implement any method described in any of the above aspects.

[0066] In a possible manner, the communication device includes the at least one memory, and the at least one memory is used to store the program or instruction.

[0067] In a ninth aspect, the present application provides a computer storage medium storing a software program, which, when read and executed by one or more processors, can implement any of the methods described in any of the above aspects.

[0068] In a tenth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any of the methods described in any of the above aspects.

[0069] In an eleventh aspect, the present application provides a chip system, comprising at least one chip and a memory, wherein the at least one chip is used to read and execute a program stored in the memory to implement any of the methods described in any of the above aspects.

[0070] In a twelfth aspect, the present application provides a communication system, the system comprising at least one terminal device and a network device, the terminal executes any method described in the first aspect, and the network device executes any method described in the second aspect.

[0071] Based on the implementations provided in the above aspects, the present application can also be further combined to provide more implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 A schematic diagram of the architecture of a mobile communication system used in an embodiment of the present application;

[0073] Figure 2 A schematic diagram of beam scanning in this application;

[0074] Figure 3 This is a schematic diagram of SSB transmission in this application;

[0075] Figure 4 This is a schematic diagram of Scheme 1 of the base station wake-up scheme in this application;

[0076] Figure 5 This is a schematic diagram of Scheme 2 of the base station wake-up scheme in this application;

[0077] Figure 6 A flowchart for summarizing the communication method in this application;

[0078] Fig. 7A One of the schematic diagrams of the terminal device sending an uplink wake-up signal and the network device receiving an uplink wake-up signal in this application;

[0079] Figure 7B This is the second schematic diagram of the terminal device sending an uplink wake-up signal and the network device receiving an uplink wake-up signal in this application;

[0080] Figure 8 This is one of the flow charts of the interaction between the terminal device and the network device after sending an uplink wake-up signal in scenario 1 in this application;

[0081] Fig. 9 This is the second flowchart of the interaction between the terminal device and the network device after sending the uplink wake-up signal in scenario 1 in this application;

[0082] Fig.10 This is one of the flow charts of the interaction between the terminal device and the network device after sending the uplink wake-up signal in scenario 2 in this application;

[0083] Fig.11 This is a schematic diagram of a terminal device in this application that meets the first condition;

[0084] Fig.12 This is the second flowchart of the interaction between the terminal device and the network device after sending the uplink wake-up signal in scenario 2 in this application;

[0085] Fig.13 A schematic diagram of the period of RACH timing and the period of UL-WUS timing in the present application;

[0086] Fig.14 This is a schematic diagram of the structure of a communication device in this application;

[0087] Fig.15 This is a schematic diagram of the structure of another communication device in this application. DETAILED DESCRIPTION

[0088] The embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WIMAX) communication system, fifth generation (5G) system or new radio (NR), or applied to future communication systems or other similar communication systems.

[0089] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as Figure 1 110a and 110b), and may further include at least one terminal (such as Figure 1120a-120j in the figure). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or part of the functions of the core network device and part of the functions of the wireless access network device can be integrated on one physical device. Terminals and wireless access network devices can be connected to each other by wired or wireless means. Figure 1 This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices. Figure 1 Not drawn in.

[0090] The wireless access network equipment may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation base station in the sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes part of the functions of a base station, for example, it may be a central unit (CU) or a distributed unit (DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and may also complete the functions of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and may also complete the functions of part or all of the physical layer. For the specific description of each of the above protocol layers, please refer to the relevant technical specifications of the 3rd generation partnership project (3GPP). The wireless access network device may be a macro base station (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1110b), may also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For ease of description, the following description takes the network device as an example of the wireless access network device.

[0091] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0092] The network equipment and terminal can be fixed or movable. The network equipment and terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on airplanes, balloons and artificial satellites. The embodiments of the present application do not limit the application scenarios of the network equipment and terminals.

[0093] The roles of network devices and terminals can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile network device. For the terminals 120j that access the wireless access network 100 through 120i, the drone 120i is a network device; but for the network device 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between network devices. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having network device functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0094] Network devices and terminals, network devices and network devices, and terminals and terminals can communicate through authorized spectrum, unlicensed spectrum, or both; can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0095] In the embodiments of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network device, or by a control subsystem including the network device function. The control subsystem including the network device function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0096] In an embodiment of the present application, the network device sends a downlink signal or downlink information to the terminal, and the downlink information is carried on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0097] It can be understood that in the embodiments of the present application, the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH), the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH) are only used as examples of downlink data channels, downlink control channels, uplink control channels and uplink data channels, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of the present application do not limit this.

[0098] The following is an explanation of the basic technical concepts involved in this application:

[0099] 1. Synchronous broadcast block (SS / PBCH block, SSB)

[0100] The synchronization broadcast block can also be called a synchronization signal block. Exemplarily, in the NR system, the SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), and a demodulation reference signal (DMRS) demodulated by the PBCH. The beam corresponding to the SSB is called an SSB beam. Each SSB can occupy 4 consecutive symbols in the time domain and 20 resource blocks (RBs) in the frequency domain.

[0101] The wireless design of the 5G air interface is based on beam management. The transmission and reception of uplink and downlink channels are based on beams. The base station transmits a narrow beam in a specific direction at a specific time point, and then changes the direction and transmits again at the next time point, and so on, so that all areas can be covered. This process is called beam scanning. Figure 2 As shown, different SSB indexes correspond to different beams or beam directions.

[0102] In the 5G air interface, the beam measurement reference signals used are shown in Table 1:

[0103] Table 1

[0104]

[0105] The transmission time of SSB is based on half a frame (i.e. 5ms) as a unit, and it is sent according to a certain period. The transmission period of SSB can be 5ms, 10ms, 20ms, 40ms, 80ms, and 160ms. NR defines a variety of SSB formats. In a half frame (5ms) of SSB transmission, the maximum number of SSB transmissions is related to the frequency. For example, if the frequency is less than or equal to 3GHz, the maximum number of SSB transmissions is 4. If the frequency is greater than 3GHz and less than or equal to 6GHz, the maximum number of SSB transmissions is 8. If the frequency is greater than 6GHz, the maximum number of SSB transmissions is 64. Figure 3 As shown, the maximum number of SSB transmissions is 4.

[0106] 2. Initial residence and random access process

[0107] First, the terminal device detects the synchronization broadcast block. Exemplarily, the terminal device can obtain cell synchronization and cell identity recognition based on the PSS and / or SSS. Then, the terminal receives the PBCH based on the detected PSS and / or SSS. Exemplarily, there is a resource mapping relationship between PSS / SSS and PBCH. PBCH includes a master information block (MIB), which includes a system radio frame number, an initial control resource set (control resource setzero, CORESET) #0 and a search space (search space, SS) #0 of a public PDCCH, wherein CORESET #0 and SS #0 respectively indicate the frequency domain position and time domain position of the public downlink control information (downlink control information, DCI) of the receiving scheduling system information block 1 (system information block 1, SIB1).

[0108] Therefore, the terminal device can detect the public PDCCH or public DCI that schedules SIB1 based on SSB, and then obtain SIB1 to complete idle state residence.

[0109] SIB1 is the necessary system information other than MIB, also known as the remaining necessary system information, which mainly includes paging configuration, the number of SSB actual transmission beams and the period, etc. In addition, SIB1 also carries random access (RACH) configuration information, which can be used to indicate configuration information such as RACH time frequency and preamble resources. Therefore, the terminal device can select the RACH timing and preamble according to SIB1, and then send a random access request message.

[0110] 3. Main radio (MR) and low power radio (LR)

[0111] The main transceiver module is used to send or receive normal signals or channels.

[0112] A low power transceiver module (LR), also known as an auxiliary transceiver module, is a transceiver module for sending or receiving low power signals / channels, and the low power transceiver module has low power consumption. Optionally, the low power transceiver module includes a wake up signal receiver (WUR), which is a receiving module or receiver for receiving low power signals. Exemplarily, the low power transceiver module can be one of the following three low power receiver architectures: 1. An architecture with a radio frequency envelope detection function; 2. A heterodyne architecture with intermediate frequency envelope detection; 3. A co-frequency / zero intermediate frequency architecture with baseband envelope detection. Among them, the above receiver architecture is considered to be suitable for OOK modulation. Some architectures may be applicable to other modulations, such as FSK modulation.

[0113] 4. Reduced capability equipment

[0114] Reduced capability devices are also referred to as RedCap devices. Exemplarily, the reduced capability device supports a maximum channel bandwidth of 20 MHz in frequency range (FR) 1 and a maximum channel bandwidth of 100 MHz in FR2. The enhanced reduced capability device is that PDSCH (unicast and broadcast) and PUSCH use a baseband bandwidth of 5 MHz, and uplink and downlink use a RF bandwidth of 20 MHz. Or the supported peak data rate target is 10 Mbps. Among them, FR1 and FR2 are two major categories of 5G frequency divisions, among which FR1 refers to the frequency band of 410 MHz to 7125 MHz, also known as medium and low frequency. FR2 refers to the frequency band of 24250 MHz to 52600 MHz, also known as high frequency, and is often also called millimeter wave band.

[0115] 5. Status of the community

[0116] The state of a cell can also be called the mode of a cell. Generally, a cell can be in a normal working state. In order to save energy, a cell can also be in a dormant state. One case is a deep sleep state, where the cell can be completely shut down and does not send any downlink physical signals or channels. At this time, the terminal device cannot detect any signals sent by the cell. Another case is that the cell can be in a shallow sleep state or a power saving state, where the cell can send some downlink physical signals or channels, such as long-period SSB (such as Figure 4 ) or simplified SSB (as shown Figure 5 As shown), it allows the terminal device to detect this part of the downlink physical signal or channel.

[0117] The following describes several base station wake-up (or cell wake-up) solutions:

[0118] Solution 1: The base station can send a long-period SSB (e.g., 160ms) to keep the terminal device synchronized with the downlink time and frequency. When the terminal device needs to initiate an uplink service, or when the terminal device requests access, the terminal device can send an uplink wakeup signal (UL WUS) to the base station to wake up the base station. After the base station is awakened, the base station can send a short-period SSB (e.g., 20ms) and / or SIB1, such as Figure 4 shown.

[0119] Solution 2: The base station only sends a simplified SSB, which may be different from the above-mentioned SSB. For example, the simplified SSB simplifies the information carried by the above-mentioned SSB, omitting some unnecessary information, or the simplified SSB carries necessary information. For example, the simplified SSB may have no PBCH, or the PSS / SSS may have different sequence designs. The terminal device may send an uplink wake-up signal to the base station to wake up the base station. After the base station is awakened, the base station may send a short-period SSB (e.g., 20ms) and / or SIB1, such as Figure 5 shown.

[0120] It can be seen that the above-mentioned base station wake-up (or cell wake-up) solution does not disclose the specific design of the uplink wake-up signal, nor does it restrict the sending mechanism of the uplink wake-up signal.

[0121] Based on the above Figure 1 The network system architecture shown in the figure and the related technical introductions described above, the present application provides several possible communication methods in the embodiments, and the execution subjects of each communication method are introduced by taking network devices and terminals as examples. For example, the network device can be the aforementioned Figure 1 The access network device 110a or the access network device 110b in the embodiment. The terminal may be the aforementioned Figure 1 Any terminal 120 shown. In addition, it should be understood that the network device can also be replaced by a communication device with a network device function or a chip, unit or module inside a communication device with a network device function. The terminal can also be replaced by a communication device with a terminal function or a chip, unit or module inside a communication device with a terminal function.

[0122] Figure 6 FIG. 1 is a schematic diagram showing a possible flow chart of a communication method provided in an embodiment of the present application. Figure 6 As shown, the method includes:

[0123] Step 600: The terminal device sends an uplink wake-up signal.

[0124] Exemplarily, the uplink wake-up signal is used to wake up the first cell. The uplink wake-up signal is used to wake up the first cell, which can also be described as the uplink wake-up signal is used to activate the first cell. The first cell can be a cell where the terminal device resides, and the state of the first cell can be a dormant state or a power-saving state.

[0125] In one possible implementation, the uplink wake-up signal may carry first indication information, and the first indication information indicates the period of the synchronization broadcast block of the desired first cell and / or the beam of the synchronization broadcast block. In another possible implementation, the uplink wake-up signal may indicate or be mapped to the first indication information, such as different uplink wake-up signal sequences, which may indicate the period of the synchronization broadcast block of the desired first cell and / or the beam of the synchronization broadcast block.

[0126] In an example, the first indication information includes a period of a synchronization broadcast block of the expected first cell, for example, 20 ms.

[0127] Alternatively, the first indication information is used to indicate whether the period of the expected synchronization broadcast block of the first cell is greater than or equal to a first period, where the first period may be a period specified by the protocol or a period indicated to the terminal device by the first cell or other cells.

[0128] Alternatively, the first indication information is used to indicate whether the period of the expected synchronization broadcast block of the first cell is less than the second period, and the second period can be the period of the long-period synchronization broadcast block, or the period of the simplified synchronization broadcast block, or the period of the downlink low-power synchronization signal, or the period specified by the protocol or the period indicated to the terminal device by the first cell or other cells. For example, the second period can be Figure 4 The cycle of medium and long-term SSB, or Figure 5 The period of the simplified SSB, or the period of the synchronization broadcast block when the cell is in a dormant state or a power-saving state.

[0129] In another example, the first indication information may include an index of a synchronization broadcast block of the desired first cell, wherein the index of the synchronization broadcast block of the desired first cell may be used to determine a beam or beam direction of the synchronization broadcast block of the desired first cell. Figure 4 or Figure 5 It can be seen that before sending the uplink wake-up signal, the terminal device may receive a long-period synchronization broadcast block or a simplified synchronization broadcast block. Figure 2It can be seen that different SSB indexes correspond to different beam directions, and the received signal strength of the terminal device for SSBs in different beam directions is different, so the terminal device can use the beam corresponding to the SSB with stronger signal strength as the beam or beam direction of the desired synchronization broadcast block of the first cell. For example, the first indication information includes an SSB index (index) of one or more integers of "0-63", or one or more integers of "0-16".

[0130] In another example, different uplink wake-up signal sequences may indicate the index of the synchronization broadcast block of the desired first cell. For example, uplink wake-up signal sequence 1 indicates index 1 of the synchronization broadcast block of the desired first cell; and uplink wake-up signal sequence 2 indicates index 2 of the synchronization broadcast block of the desired first cell.

[0131] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell expected to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0132] The following is a brief description of the above contents:

[0133] a. The second cell you want to wake up

[0134] It is understandable that the number of the second cells may be one or more. The second cell is different from the first cell, for example, the first cell and the second cell may belong to the same cell group. For another example, the second cell is a neighboring cell of the first cell.

[0135] b. Whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold

[0136] Exemplarily, when the second indication information indicates whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, the network device can learn whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold. Exemplarily, if the uplink data cache size of the terminal device is greater than or equal to the cache threshold, the network device can determine to wake up the first cell, otherwise, the first cell may not be woken up.

[0137] c. Whether the path loss of the terminal device is greater than or equal to the path loss threshold

[0138] Exemplarily, when the second indication information indicates whether the path loss of the terminal device is greater than or equal to the path loss threshold, the network device can learn whether the path loss of the terminal device is greater than or equal to the path loss threshold. Exemplarily, the network device can further determine the transmission power of the synchronization broadcast block of the first cell.

[0139] d. Whether the terminal device is a reduced-capacity device

[0140] Exemplarily, when the second indication information indicates whether the terminal device is a reduced-capability device, if the terminal device is a reduced-capability device, if the first cell is awakened, exemplarily, the first cell can directly reply to Msg2 (e.g., a random access response (RAR) message). Exemplarily, RAR occupies 20MHz bandwidth, that is, the terminal device does not need to send a random access request message (e.g., preamble) at this time, thereby reducing the access complexity for the reduced-capability device.

[0141] It can be understood that the above a to d are only examples and are not intended to be limiting of the present application. The second indication information may also carry other content.

[0142] In a possible implementation, the second indication information includes a first information element, a second information element and a third signal, wherein the first information element can be used to indicate whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold. The first information element can occupy 1 bit. When the value of the 1 bit occupied by the first information element is 1, it indicates that the uplink data cache size of the terminal device is greater than or equal to the cache threshold. When the value of the 1 bit occupied by the first information element is 0, it indicates that the uplink data cache size of the terminal device is less than the cache threshold. Similarly, the second information element can occupy 1 bit. When the value of the 1 bit occupied by the second information element is 1, it indicates that the path loss of the terminal device is greater than or equal to the path loss threshold. When the value of the 1 bit occupied by the first information element is 0, it indicates that the path loss of the terminal device is less than the path loss threshold. The third information element can occupy 1 bit. When the value of the 1 bit occupied by the third information element is 1, it indicates that the terminal device is a reduced capability device. When the value of the 1 bit occupied by the third information element is 0, it indicates that the terminal device is not a reduced capability device.

[0143] In another possible implementation, when the uplink data cache size of the terminal device is greater than or equal to the cache threshold, the second indication information includes a fourth information element, and the fourth information element is used to indicate that the uplink data cache size of the terminal device is greater than or equal to the cache threshold. If the second indication information does not include the fourth information element, it indicates that the uplink data cache size of the terminal device is less than the cache threshold. Similarly, when the path loss of the terminal device is greater than or equal to the path loss threshold, the second indication information includes a fifth information element, and the fifth information element is used to indicate that the path loss of the terminal device is greater than or equal to the path loss threshold. If the second indication information does not include the fifth information element, it indicates that the path loss of the terminal device is less than the path loss threshold. When the terminal device is a reduced capability device, the second indication information includes a sixth information element, and the sixth information element is used to indicate that the terminal device is a reduced capability device. If the second indication information does not include the sixth information element, it indicates that the terminal device is not a reduced capability device.

[0144] For example, the uplink wake-up signal can carry 16 bits of information, assuming that the bit index starts from 0, where bits 0 to 3: indicate the period of the SSB of the expected first cell, as shown in Table 2; bits 4 to 10: indicate the SSBindex of the expected first cell; bit 11: indicates whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold. Bits 12 to 14 indicate at least one of the network slice group identifier, network slice identifier, emergency service identifier, data radio bearer identifier, or logical channel identifier corresponding to the service initiated by the terminal device. Bit 15 indicates whether the path loss of the terminal device is greater than or equal to the path loss threshold. It will be understood that the above bit allocation method is for example only and is not intended to be a limitation of the present application.

[0145] Table 2

[0146]

[0147]

[0148] In another possible implementation, different uplink wake-up signal sequences indicate whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold and / or whether the path loss of the terminal device is greater than or equal to the path loss threshold. For example, uplink wake-up signal sequence 1 indicates that the uplink data cache size of the terminal device is greater than or equal to the cache threshold and / or the path loss of the terminal device is greater than or equal to the path loss threshold. Uplink wake-up signal sequence 2 indicates that the uplink data cache size of the terminal device is less than the cache threshold and / or the path loss of the terminal device is less than the path loss threshold.

[0149] Exemplarily, before step 400, the terminal device may receive configuration information of an uplink wake-up signal, and then the terminal device may send an uplink wake-up signal according to the configuration information of the uplink wake-up signal.

[0150] In one possible implementation, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of times the uplink wake-up signal is sent, the power ramping step (powerRampingStep) of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0151] The following is a brief description of the above contents:

[0152] A. Waveform information of the uplink wake-up signal and the number of bits carried by one symbol occupied by the uplink wake-up signal

[0153] Exemplarily, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of on-off key (OOK) and orthogonal frequency division multiplexing (OFDM), multi-carrier amplitude shift keying (ASK), multi-carrier frequency shift keying (FSK), or OFDM.

[0154] Exemplarily, a harmonized waveform of OOK and OFDM refers to transmitting a specific OFDM sequence on an OOK symbol.

[0155] Exemplarily, when the waveform of the uplink wake-up signal is a multi-carrier ASK waveform, the uplink wake-up signal may be implemented in the following manner:

[0156] Mode 1: Each OFDM symbol carries 1 bit and occupies L OFDM symbols.

[0157] Mode 2: Each OFDM symbol carries M bits in the frequency domain and occupies L OFDM symbols.

[0158] Mode 3: multi-tone single bit, occupying L OFDM symbols.

[0159] Mode 4: Carrying M bits in the time domain, occupying L OFDM symbols.

[0160] Wherein, L is a positive integer, for example, L=4, and the value of L can be specified by the protocol.

[0161] When the waveform of the uplink wake-up signal is a multi-carrier FSK waveform, the uplink wake-up signal can be implemented in the following manner:

[0162] Mode 1: N subcarriers are divided into Q pairs of segments, each segment includes one carrier or multiple carriers, occupying L OFDM symbols.

[0163] Method 2: N subcarriers are divided into 2 Q For segments, each segment includes one carrier or multiple carriers, occupying L OFDM symbols.

[0164] Wherein, N and Q are positive integers, and Q represents the number of bits carried by a symbol occupied by the uplink wake-up signal. For example, N=16, Q=2, L=4, and the values ​​of N, Q, and L can be specified by the protocol.

[0165] In addition, the uplink wake-up signal can also be carried by Zadoff Chu or M sequence.

[0166] B. Time domain resource information and frequency domain resource information of uplink wake-up signal

[0167] Exemplarily, the time domain resource information of the uplink wake-up signal indicates at least one of the period, duration and offset of the uplink wake-up signal. For example, the period of the uplink wake-up signal may be 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms or 640ms.

[0168] C. Maximum number of times the uplink wake-up signal is sent

[0169] Exemplarily, when the terminal device does not monitor the synchronization broadcast block and / or system information block of the first cell, the terminal device can determine whether to perform related operations according to the maximum number of times the uplink wake-up signal is sent. Fig.11 Or the embodiment shown in 13.

[0170] D. Power ramp-up step size of uplink wake-up signal

[0171] Exemplarily, when the terminal device fails to monitor the synchronization broadcast block and / or system information block of the first cell, the terminal device may increase the transmission power of the uplink wake-up signal according to the power climbing step size of the uplink wake-up signal.

[0172] E. Cache Threshold

[0173] Exemplarily, the terminal device can determine whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold based on the cache threshold. If the terminal device determines that the uplink data cache size of the terminal device is greater than or equal to the cache threshold, the terminal device can send an uplink wake-up signal. Otherwise, the terminal device will not send an uplink wake-up signal until the uplink data cache size of the terminal device is greater than or equal to the cache threshold. Exemplarily, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold can be indicated by the above-mentioned second indication information.

[0174] F. Path loss threshold

[0175] Exemplarily, the terminal device can determine whether the path loss of the terminal device is greater than or equal to the path loss threshold based on the path loss threshold, and can be indicated by the above-mentioned second indication information. For example, the path loss can be determined based on whether the terminal device receives a long-period synchronization broadcast block or a simplified synchronization broadcast block or a downlink low-power synchronization signal.

[0176] It is understandable that the above A to F are only examples and are not intended to limit the present application, and the configuration information of the uplink wake-up signal may also include other contents. In addition, at least one of the above A to F may also be agreed upon through a protocol.

[0177] In a possible implementation, the configuration information of the uplink wake-up signal may also include first information, and the first information includes at least one of the following information: access identity, network slice group identifier, network slice identifier, emergency service identifier, data radio bearer identifier (DRB), logical channel identifier (logical channel ID). It can be understood that the first information may also include other content, which is not limited in this application. The first information is used by the terminal device to determine whether to send an uplink wake-up signal.

[0178] For example, the network slice group identifier can be a network slice access layer grouping identifier (network slice asgroup ID, NSAG ID), and the network slice identifier can be single network slice selection assistance information (single network slice selection assistance information, S-NSSAI).

[0179] In one example, the first information may include an access identifier, wherein the number of access identifiers may be one or more, and the access identifier included in the first information is an access identifier of a terminal device that is allowed to send an uplink wake-up signal. In a case where the access identifier of the terminal device belongs to the access identifier included in the first information, the terminal device sends an uplink wake-up signal. In addition, in a possible implementation, if the access identifier of the terminal device belongs to the access identifier included in the first information, the uplink wake-up signal may also carry the access identifier of the terminal device.

[0180] In another example, the first information may include a network slice group identifier, wherein the number of network slice group identifiers may be one or more, and when the network slice group identifier corresponding to the service initiated by the terminal device belongs to the network slice group identifier included in the first information, the terminal device sends an uplink wake-up signal. In addition, in a possible implementation, if the network slice group identifier corresponding to the service initiated by the terminal device belongs to the network slice group identifier included in the first information, the uplink wake-up signal may also carry the network slice group identifier corresponding to the service initiated by the terminal device, for example, the network slice group identifier may be indicated by bits 12 to 14 in the 16-bit information carried by the uplink wake-up signal.

[0181] It can be understood that the network slice group identifier can also be replaced by a network slice identifier, an emergency service, a data radio bearer identifier, and a logical channel identifier.

[0182] In one example, when the service initiated by the terminal device is an emergency service included in the first information, the terminal device sends an uplink wake-up signal. In another example, when the first information does not include an emergency service identifier, or even when the terminal device does not monitor the first information, if the service initiated by the terminal device is an emergency service, the terminal device can directly send an uplink wake-up signal.

[0183] In one example, when the data radio bearer identifier corresponding to the service initiated by the terminal device belongs to the data radio bearer identifier included in the first information, the terminal device sends an uplink wake-up signal. Alternatively, when the logical channel identifier corresponding to the service initiated by the terminal device belongs to the logical channel identifier included in the first information, the terminal device sends an uplink wake-up signal.

[0184] In addition, in a possible implementation, if the access identifier of the terminal device belongs to the access identifier included in the first information, the uplink wake-up signal may also carry the access identifier of the terminal device.

[0185] Exemplarily, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control (RRC) signaling.

[0186] In one example, the broadcast message may carry configuration information of one or more uplink wake-up signals.

[0187] Exemplarily, as shown in Table 3 below, the broadcast message may indicate the configuration information of the uplink wake-up signal of one or more cells. Cell ID list 1 or physical cell identifier (PCI) list 1 corresponds to the configuration information 1 of the uplink wake-up signal; Cell ID list 2 or PCI list 2 corresponds to the configuration information 2 of the uplink wake-up signal. When the terminal device expects to wake up a cell in Cell ID list 1 or a cell in PCI list 1, the terminal device may send an uplink wake-up signal based on the configuration information 1 of the uplink wake-up signal, and so on.

[0188] Table 3

[0189] Cell ID list 1 or PCI list 1 Uplink wake-up signal configuration information 1 Cell ID list 2 or PCI list 2 Uplink wake-up signal configuration information 2 … …

[0190] Exemplarily, the broadcast message may include K sets of uplink wake-up signal configuration information corresponding to K cells one by one, or described as K uplink wake-up signals used to wake up K cells, where K is a positive integer. For example, the broadcast message may include configuration information of an uplink wake-up signal used to wake up a first cell, configuration information of an uplink wake-up signal used to wake up a second cell, and the like.

[0191] In another example, the downlink low power synchronization signal is a synchronization signal with a long period, for example, the period of the downlink low power synchronization signal is {320ms, 640ms, 1280ms, 2560ms, 5120ms, 10240ms}. The terminal device can perform time-frequency synchronization according to the downlink low power synchronization signal. The downlink low power synchronization signal can also be used to carry the configuration information of the uplink wake-up signal of the corresponding cell.

[0192] In another example, for an inactive terminal device and a connected terminal device, the configuration information of the uplink wake-up signal can be carried by RRC signaling. For example, for an inactive terminal device, the RRC signaling is an RRC release message. At this time, the uplink wake-up signal configured by the configuration information of the uplink wake-up signal is used to wake up the last serving cell (and / or other cells) of the terminal device. For a connected terminal device, the RRC signaling is an RRC reconfiguration message. At this time, the uplink wake-up signal configured by the configuration information of the uplink wake-up signal is used to wake up the current serving cell (and / or other cells) of the terminal device. For details, please refer to Table 3 above.

[0193] In another example, the configuration information of the uplink wake-up information can be indicated as 16 bits of information, assuming that the bit index starts from 0, where bits 0 to 3: indicate the period of the uplink wake-up signal, such as shown in Table 2; bits 4 to 8: indicate the time domain resource information and frequency domain resource information of the uplink wake-up signal. For example, the terminal device can obtain the correspondence between the time domain resource information and the frequency domain resource information of the uplink wake-up signal and the time-frequency resource index, which can be predefined or configured in advance by the protocol, and bits 4 to 8 can indicate the specific time-frequency resource index. For another example, bits 4 to 8 indicate the time-frequency resource position and the corresponding offset of the initial uplink bandwidth part (bandwidth part BWP) of the terminal device, bits 9 to 10: indicate at least one of the following: network slice group identifier, network slice identifier, emergency service identifier, data radio bearer identifier, or logical channel identifier, that is, indicate part or all of the first information; bit 11: indicate the cache threshold; bit 12: indicate the access identifier; bits 13 to 14: indicate the maximum number of times the uplink wake-up signal is sent; bit 15: indicate the power climbing step of the uplink wake-up signal. It should be understood that the above bit allocation method is only an example and is not intended to be a limitation of the present application.

[0194] Accordingly, the network device receives an uplink wake-up signal from the terminal device. Exemplarily, the network device receives the uplink wake-up signal through the auxiliary receiver. When the network device decides to wake up the first cell, the network device may send a synchronization broadcast block or a system information block of the first cell through the main transceiver module. Therefore, the main transceiver module may remain in a dormant or energy-saving state before waking up the first cell, so that the maximum possible energy-saving gain may be obtained. Exemplarily, the auxiliary receiver may be a module in the low-power transceiver module.

[0195] like Fig. 7A As shown, the terminal device sends an uplink wake-up signal through a low-power transceiver module (LR), and the network device receives the uplink wake-up signal through a low-power transceiver module (LR). Figure 7B Described, the terminal equipment sends the uplink wake-up signal through the main transceiver module (MR) or the low-power transceiver module (LR), and the network equipment receives the uplink wake-up signal through the low-power transceiver module (LR).

[0196] Step 610: The terminal device monitors the synchronization broadcast block and / or system information block of the first cell.

[0197] Exemplarily, the synchronization broadcast block is SSB and the system information block is SIB1.

[0198] Optionally, in step 620, the network device broadcasts a synchronization broadcast block and / or a system information block of the first cell.

[0199] It should be noted that the present application does not limit the order of step 610 and step 620.

[0200] In a possible implementation, the network device may broadcast the synchronization broadcast block and / or system information block of the first cell according to the first indication information. Exemplarily, the network device may determine the period of the synchronization broadcast block of the first cell and / or the index of the synchronization broadcast block according to the first indication information.

[0201] For example, if the first indication information includes the period and / or index of the synchronization broadcast block of the expected first cell, the network device can determine that the period of the synchronization broadcast block of the first cell is the period of the synchronization broadcast block of the expected first cell, and / or the network device can determine that the beam of the synchronization broadcast block of the first cell is the beam corresponding to the index of the synchronization broadcast block of the expected first cell.

[0202] For another example, if the first indication information is used to indicate that the period of the expected synchronization broadcast block of the first cell is less than 160 ms, the network device may determine that the period of the synchronization broadcast block of the first cell is 40 ms.

[0203] It is understandable that after the terminal device sends the uplink wake-up signal, the terminal device may monitor the synchronization broadcast block and / or system information block of the first cell, that is, the first cell is awakened, hereinafter referred to as scenario 1. Alternatively, the synchronization broadcast block and / or system information block of the first cell may not be monitored, that is, the first cell is not awakened, hereinafter referred to as scenario 2.

[0204] The following describes the possible processes of interaction between the terminal device and the network device after sending the uplink wake-up signal for the above scenario 1 and scenario 2 respectively.

[0205] It should be noted that the following Figure 8 , Fig. 9 , Fig.10 and Fig.12 The embodiment shown can be combined with the above Figure 4 The illustrated embodiments can be combined or used as separate embodiments.

[0206] like Figure 8 The following is one possible process of the terminal device interacting with the network device after sending the uplink wake-up signal in scenario 1:

[0207] Step 800: The terminal device sends an uplink wake-up signal, wherein the uplink wake-up signal is used to wake up the first cell.

[0208] Step 810: The first cell broadcasts a synchronization broadcast block and / or a system information block of the first cell.

[0209] Exemplarily, in response to the uplink wake-up signal, the first cell broadcasts a synchronization broadcast block and / or a system information block of the first cell.

[0210] Step 820: The terminal device sends a random access request message.

[0211] Exemplarily, the terminal device sends a random access request message according to the monitored synchronization broadcast block and / or system information block of the first cell, where the random access request message is used to request access to the first cell.

[0212] Exemplarily, the terminal device sends a random access request message to the first cell.

[0213] Step 830: The first cell sends a random access response message to the terminal device. Correspondingly, the terminal device receives the random access response message from the first cell.

[0214] Exemplarily, the first cell sends a random access response message according to the received random access request message.

[0215] Exemplarily, the random access response message may include at least one of the following: a timing advance command, a temporary cell-radio network temporary identifier (C-RNTI), and an uplink grant (UL grant).

[0216] Using the above Figure 8 In the illustrated embodiment, after the terminal device sends an uplink wake-up signal, if the terminal device wakes up the first cell, it sends a random access request message according to the received synchronization broadcast block and / or system information block of the first cell.

[0217] like Fig. 9 The following is a possible second process of the interaction between the terminal device and the network device after sending the uplink wake-up signal in scenario 1:

[0218] Step 900: The terminal device sends an uplink wake-up signal, wherein the uplink wake-up signal is used to wake up the first cell.

[0219] Exemplarily, the terminal device sends an uplink wake-up signal to the first cell.

[0220] Step 910: The first cell broadcasts a synchronization broadcast block and / or a system information block of the first cell.

[0221] Exemplarily, in response to the uplink wake-up signal, the first cell broadcasts a synchronization broadcast block and / or a system information block of the first cell.

[0222] Step 920: The first cell sends a random access response message to the terminal device.

[0223] Correspondingly, the terminal device randomly accesses a response message according to the monitored synchronization broadcast block and / or system information block of the first cell, wherein the random access response message includes information of the uplink wake-up signal.

[0224] Exemplarily, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or the sequence index of the uplink wake-up signal. For example, when the waveform of the uplink wake-up signal is a coordinated waveform of OOK and OFDM, the information of the uplink wake-up signal may include the sequence index of the uplink wake-up signal.

[0225] Exemplarily, the random access response message may also include at least one of the following: a time advance command, a temporary C-RNTI, and an uplink grant.

[0226] use Fig. 9 In the illustrated embodiment, the terminal device does not need to send a random access request message, and the terminal device only sends an uplink wake-up signal. The uplink wake-up signal can achieve the function of the random access request message, thereby reducing the delay of the terminal device accessing the network.

[0227] like Fig.10 The figure shows one of the possible processes of the terminal device interacting with the network device after sending the uplink wake-up signal in scenario 2:

[0228] Step 1000: The terminal device sends an uplink wake-up signal, wherein the uplink wake-up signal is used to wake up the first cell.

[0229] Exemplarily, the terminal device sends an uplink wake-up signal to the first cell.

[0230] Step 1010: If the first condition is met, the terminal device sends a random access request message to the first cell.

[0231] Among them, the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that the first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored.

[0232] For example, Fig.11 As shown, assuming that the maximum number of times the uplink wake-up signal is sent is 3, the terminal device sends a random access request message to the first cell three times, and fails to monitor the synchronization broadcast block and / or system information block of the first cell, then the terminal device sends a random access request message to the first cell, for example, a preamble. Exemplarily, the maximum number of times the uplink wake-up signal is sent can be carried by the configuration information of the uplink wake-up signal, or can be clearly specified in the protocol.

[0233] For example, Fig.11As shown, assuming that the first preset duration is 128ms, the terminal device sends a random access request message to the first cell and starts a timer, and the timer duration is 128ms. When the timer times out and the synchronization broadcast block and / or system information block of the first cell is not monitored, the terminal device sends a random access request message to the first cell. Exemplarily, the first preset duration can be carried by the configuration information of the above-mentioned uplink wake-up signal, or is clearly specified in the protocol.

[0234] It is understandable that the terminal device can send an uplink wake-up signal to the first cell once or multiple times.

[0235] Exemplarily, the terminal device can determine the transmission power of the uplink wake-up signal according to the path loss of the terminal device. For example, the path loss can be determined based on the long-period synchronization broadcast block or the simplified synchronization broadcast block or the downlink low-power synchronization signal received by the terminal device. In addition, the terminal device can also perform time-frequency synchronization and / or automatic gain control (AGC) adjustment based on the received long-period synchronization broadcast block or the simplified synchronization broadcast block or the downlink low-power synchronization signal. After the terminal device sends an uplink wake-up signal once or multiple times, if the synchronization broadcast block and / or the system information block of the first cell is not monitored, the terminal device can increase the transmission power of the uplink wake-up signal. For example, the terminal device can increase the transmission power of the uplink wake-up signal based on the power climbing step size of the uplink wake-up signal. Exemplarily, the power climbing step size of the uplink wake-up signal can be carried by the configuration information of the above-mentioned uplink wake-up signal or clearly specified in the protocol.

[0236] Exemplarily, the random access request message in step 1010 may include a random access sequence, wherein the random access sequence may also be referred to as a preamble. The random access sequence may be a traditional random access sequence or a specific random access sequence.

[0237] In one possible implementation, the terminal device can determine the random access sequence based on third indication information, wherein the third indication information indicates at least one of the following: a root sequence index of a random access request message, a random access sequence index, or a beam association configuration of a downlink low-power synchronization signal and a random access sequence.

[0238] Exemplarily, the downlink low-power synchronization signal here may be a long-period synchronization broadcast block or a simplified synchronization broadcast block or a downlink low-power synchronization signal.

[0239] Exemplarily, the third indication information may also include time-frequency resource information occupied by the random access request message, and then the terminal device may send the random access request message according to the time-frequency resource information.

[0240] In addition, in one example, the third indication information may also include an identifier of the first cell, or the third indication information corresponds to the identifier of the first cell. That is, it indicates that the random access request message determined according to the third indication information corresponds to the first cell, or it is described as that the random access request message determined according to the third indication information is used to request access to the first cell.

[0241] For example, the third indication information corresponds to the identifier of the first cell, and the third indication information includes the root sequence index of the random access request message. When the terminal device sends a random access request message to the first cell, the random access request message is determined according to the root sequence index of the random access request message in the third indication information.

[0242] In another example, as shown in Table 4 below, the first cell or the third cell may indicate third indication information corresponding to one or more cells. Among them, Cell ID list 1 or PCI list 1 corresponds to third indication information 1; Cell ID list 2 or PCI list 2 corresponds to third indication information 2. When the terminal device sends a random access request message to a cell in Cell ID list 1 or a cell in PCI list 1, the terminal device may determine the random access request message according to the third indication information.

[0243] Table 4

[0244] Cell ID list 1 or PCI list 1 The third instruction information 1 Cell ID list 2 or PCI list 2 Third instruction information 2 … …

[0245] In another example, the number of third indication information is W, and the W third indication information corresponds one-to-one to the identifiers of W cells, and W is a positive integer. That is, the terminal device can determine the random access request message based on the third indication information corresponding to the i-th cell among the W cells, and the random access request message is used to request access to the i-th cell, where 1≤i≤W.

[0246] Exemplarily, the terminal device may receive the third indication information from the first cell, or the terminal device may receive the third indication information from the third cell.

[0247] Corresponding to step 1010, the first cell receives a random access request message from the terminal device. If the random access request message includes a specific random access sequence, the first cell may also send a synchronization broadcast block and / or a system information block. Further, the first cell may send a random access response message to the terminal device.

[0248] Step 1020: The terminal device monitors the random access response message.

[0249] Using the above Fig.10 In the illustrated embodiment, after the terminal device sends an uplink wake-up signal, if the first condition is met, the terminal device can directly send a random access request message to the first cell.

[0250] like Fig.12 The following is a possible second process of the interaction between the terminal device and the network device after sending the uplink wake-up signal in scenario 2:

[0251] Step 1200: The terminal device sends an uplink wake-up signal, wherein the uplink wake-up signal is used to wake up the first cell.

[0252] Exemplarily, the terminal device sends an uplink wake-up signal to the first cell.

[0253] Step 1210: If the first condition is met, the terminal device sends a random access request message to the second cell.

[0254] The second cell is a cell reselected by the terminal device or a designated cell. The first condition may refer to the above step 1020. Exemplarily, the third indication information may also indicate the second cell, that is, the designated cell may be indicated by the third indication information.

[0255] Exemplarily, the random access request message in step 1010 may include a random access sequence, wherein the random access sequence may be a traditional random access sequence or a specific random access sequence.

[0256] In a possible implementation, the terminal device may determine the random access sequence according to third indication information, and the third indication information may refer to the above step 1020.

[0257] Exemplarily, the terminal device may receive the third indication information from the first cell, or the terminal device may receive the third indication information from the third cell, wherein the third cell may be the same as or different from the second cell, which is not limited in the present application.

[0258] Step 1220: The second cell sends a random access response message to the terminal device.

[0259] Optionally, step 1230A: after the random access process is completed, the terminal device sends the identifier of the first cell to the second cell, so that the second cell wakes up the first cell.

[0260] Exemplarily, the terminal device sends an RRC uplink information transfer (ULInformationTransfer) message to the second cell, where the message includes an identifier of the first cell.

[0261] Optionally, step 1230B: after the random access process is completed, the second cell determines, based on the random access request message, that the terminal device expects to wake up the first cell.

[0262] In a possible implementation, the second cell may determine that the cell that the terminal device expects to activate is the first cell according to the time-frequency resources occupied by the random access request message or the random access sequence adopted by the random access request message.

[0263] Either or both of step 1230A and step 1230B may be performed.

[0264] Optionally, step 1240: the second cell may send a first message to the first cell.

[0265] Exemplarily, the first message is a cell activation message or a cell wake-up message. Optionally, the first message includes an identifier of the first cell.

[0266] Using the above Fig.12 In the illustrated embodiment, after the terminal device sends an uplink wake-up signal, if the first condition is met, the terminal device can first access the second cell and then wake up the first cell through the second cell.

[0267] In addition, the present application also provides a communication method for enabling a terminal device to determine to send an uplink wake-up signal or a random access request message, thereby activating a base station or a cell, and sending a synchronization information block and system broadcast information (SIB1).

[0268] In a possible implementation, the terminal device determines whether to send an uplink wake-up signal based on the second information. If the terminal device satisfies any one or more of the information included in the second information, the terminal device sends an uplink wake-up signal, otherwise, the terminal device does not send an uplink wake-up signal. The second information may be configured by the network device or specified by the protocol. For the waveform information of the uplink wake-up signal, reference may be made to the relevant content in A above.

[0269] The terminal device determines whether to send a random access request message or a random access preamble according to the third information. If the terminal device satisfies any one or more of the information included in the third information, the terminal device sends a random access request message, otherwise, the terminal device does not send a random access request message. The third information may be configured by the network device or specified by the protocol. The second information is different from the third information.

[0270] In a possible implementation, the second information indicates an emergency service or a high priority service. Exemplarily, the second information includes at least one of the following information: a first access identifier, a first network slice group identifier, a first network slice identifier, a first emergency service identifier, a first data radio bearer identifier, and a first logical channel identifier.

[0271] The third information indicates a non-emergency service or a low priority service. The third information includes at least one of the following information: a second access identifier, a second network slice group identifier, a second network slice identifier, a second emergency service identifier, a second data radio bearer identifier, and a second logical channel identifier.

[0272] In another possible implementation, the terminal device determines whether to send an uplink wake-up signal according to the second information. If the terminal device satisfies any one or more information included in the second information, the terminal device sends an uplink wake-up signal, otherwise, the terminal device sends a random access request message. Alternatively, it can be described as follows: if the terminal device satisfies any one or more information included in the second information, the terminal device sends an uplink wake-up signal, and if the terminal device determines that none of the information included in the second information is satisfied, the terminal device sends a random access request message. The second information may be configured by the network device or specified by the protocol.

[0273] Exemplarily, the second information and / or the third information may be indicated by a network device. For example, the second information and / or the third information may be indicated by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or an RRC signaling.

[0274] Exemplarily, the period of the random access request message is greater than the period of the uplink wake-up signal. Fig.13 As shown, the RACH occasion (RACH occasion, RO) is the time when the network device receives the random access request message, or the time when the terminal device sends the random access request message. The UL-WUS occasion is the time when the network device receives the uplink wake-up signal, or the time when the terminal device sends the uplink wake-up signal. Among them, the network device receives the uplink wake-up signal through the LR and receives the random access request message through the MR.

[0275] The above method can ensure that emergency services or high-priority services can quickly wake up the cell through the uplink wake-up signal, and the base station receives the uplink wake-up signal through the LR, which realizes the rapid activation of the cell and the energy saving of the base station. For non-emergency services or low-priority services, the existing random access process can be used to activate the cell.

[0276] It is understandable that in order to implement the functions in the above embodiments, the network device and the terminal include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0277] Fig.14 and Fig.15 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 One of the terminals 120a-120j shown may also be Figure 1 The base station 110a or 110b shown may also be a module (such as a chip) applied to a terminal or a base station.

[0278] like Fig.14 As shown, the communication device 1400 includes a processing unit 1410 and a transceiver unit 1420. The communication device 1400 is used to implement the above Figure 6 , 8 , 9, 10, and 12 are the functions of the terminal or network device in the method embodiments shown.

[0279] When the communication device 1400 is used to implement Figure 6 , 8 , 9, 10, and 12. In the method embodiments shown in FIG. 12, the function of the terminal device is:

[0280] The processing unit 1410 calls the transceiver unit 1420 to send an uplink wake-up signal, where the uplink wake-up signal is used to wake up the first cell, and the uplink wake-up signal carries first indication information, where the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; and monitors the synchronization broadcast block and / or system information block of the first cell.

[0281] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0282] In one possible design, the transceiver unit 1420 is used to send the uplink wake-up signal according to the configuration information of the uplink wake-up signal when sending the uplink wake-up signal.

[0283] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0284] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of OOK and OFDM, the multi-carrier amplitude shift keying ASK, the multi-carrier frequency shift keying FSK, or OFDM.

[0285] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0286] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or a radio resource control RRC signaling.

[0287] In one possible design, the transceiver unit 1420 is used to send the random access request message to the first cell according to the monitored synchronization broadcast block and / or system information block of the first cell after sending the uplink wake-up signal.

[0288] In one possible design, the transceiver unit 1420 is used to send the random access request message to the first cell after sending the uplink wake-up signal, determining that the first condition is met according to the processing unit 1410; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored.

[0289] In one possible design, the transceiver unit 1420 is used to send the random access request message to the second cell after sending the uplink wake-up signal, determining that the first condition is met according to the processing unit 1410; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that the first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; after the random access process is completed, sending the identifier of the first cell to the second cell.

[0290] In one possible design, the second cell is a cell reselected by the terminal device or a designated cell.

[0291] In one possible design, the transceiver unit 1420 is used to receive third indication information from the first cell or the third cell, and the third indication information indicates at least one of the following: time-frequency resource information occupied by the random access request message, the root sequence index of the random access request message, the random access sequence index, or the beam association configuration of the downlink low-power synchronization signal and the random access sequence.

[0292] In one possible design, the transceiver unit 1420 is used to receive a random access response message from the first cell after sending an uplink wake-up signal according to the monitored synchronization broadcast block and / or system information block of the first cell, and the random access response message includes information of the uplink wake-up signal.

[0293] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0294] When the communication device 1400 is used to implement Figure 6 , 8 , 9, 10, and 12. In the method embodiments shown in FIG. 12, the function of the network device is:

[0295] The processing unit 1410 calls the transceiver unit 1420 to receive the uplink wake-up signal, where the uplink wake-up signal is used to wake up the first cell, and the uplink wake-up signal carries first indication information, where the first indication information indicates the expected period of the synchronization broadcast block of the first cell and / or the beam of the synchronization broadcast block; and broadcasts the synchronization broadcast block and / or system information block of the first cell.

[0296] In one possible design, the transceiver unit 1420 is used to receive the uplink wake-up signal through an auxiliary receiver when receiving the uplink wake-up signal.

[0297] In one possible design, the processing unit 1410 is used to determine the period of the synchronization broadcast block and / or the index of the synchronization broadcast block according to the first indication information before broadcasting the synchronization broadcast block according to the uplink wake-up signal.

[0298] In one possible design, the uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

[0299] In one possible design, the transceiver unit 1420 is used to send configuration information of the uplink wake-up signal before sending the uplink wake-up signal.

[0300] In one possible design, the configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmissions of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

[0301] In one possible design, the waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of OOK and OFDM, the multi-carrier ASK, multi-carrier FSK, or OFDM.

[0302] In a possible design, the configuration information of the uplink wake-up signal also includes first information, and the first information includes at least one of the following information: an access identifier, a network slice group identifier, a network slice identifier, an emergency service identifier, a data radio bearer identifier, and a logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

[0303] In one possible design, the configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal, or RRC signaling.

[0304] In one possible design, the transceiver unit 1420 is used to send a random access response message to the terminal device after broadcasting the synchronization broadcast block and / or system information block of the first cell according to the uplink wake-up signal, and the random access response message includes information of the uplink wake-up signal.

[0305] In one possible design, the information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or a sequence index of the uplink wake-up signal.

[0306] For a more detailed description of the processing unit 1410 and the transceiver unit 1420, please refer to Figure 6 , 8 The relevant descriptions in the method embodiments shown in , 9, 10, and 12 are directly obtained and will not be repeated here.

[0307] like Fig.15As shown, the communication device 1500 includes a processor 1510 and an interface circuit 1520. The processor 1510 and the interface circuit 1520 are coupled to each other. It is understood that the interface circuit 1520 can be a transceiver or an input-output interface. Optionally, the communication device 1500 may also include a memory 1530 for storing instructions executed by the processor 1510 or storing input data required by the processor 1510 to execute instructions or storing data generated after the processor 1510 executes instructions.

[0308] When the communication device 1500 is used to implement Figure 6 , 8 , 9, 10, and 12, the processor 1510 is used to implement the functions of the above-mentioned processing unit 1410, and the interface circuit 1520 is used to implement the functions of the above-mentioned transceiver unit 1420.

[0309] When the above communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiment. The terminal chip receives information from other modules in the terminal (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal; or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or an antenna), and the information is sent by the terminal to the network device.

[0310] When the above-mentioned communication device is a module applied to a network device, the network device module implements the function of the network device in the above-mentioned method embodiment. The network device module receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal to the network device; or, the network device module sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal. The network device module here can be a baseband chip of the network device, or it can be a DU or other module. The DU here can be a DU under the open radio access network (O-RAN) architecture.

[0311] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0312] In the present application, another example of a device is provided, the notification device includes at least one processor and at least one memory, the at least one processor is coupled to the at least one memory, the at least one memory is used to store instructions, when the instructions are executed by the at least one processor, the communication device executes the method in the above embodiment. Take the communication device including a processor and a memory as an example, Fig.15 As shown, the communication device 1500 includes a processor 1510 and a memory 1530. The processor 1510 and the memory 1530 are coupled, and the memory 1530 stores instructions. When the instructions stored in the memory 1530 are executed by the processor 1510, the communication device 1500 executes the method executed by the network device or terminal in the above embodiment.

[0313] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and can write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal. The processor and the storage medium can also be present in a network device or a terminal as discrete components.

[0314] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0315] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0316] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0317] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: The method includes: Sending an uplink wake-up signal, where the uplink wake-up signal is used to wake up the first cell, where the uplink wake-up signal carries first indication information, where the first indication information indicates a desired period of a synchronization broadcast block of the first cell and / or a beam of the synchronization broadcast block; Monitor the synchronization broadcast block and / or system information block of the first cell.

2. The method according to claim 1, characterized in that The uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell expected to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

3. The method according to claim 2, characterized in that Send an uplink wake-up signal, including: The uplink wake-up signal is sent according to the configuration information of the uplink wake-up signal.

4. The method according to claim 3, characterized in that The configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmission times of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

5. The method according to claim 4, characterized in that The waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of on-off keying OOK and orthogonal frequency division multiplexing OFDM, multi-carrier amplitude shift keying ASK, multi-carrier frequency shift keying FSK, or OFDM.

6. The method according to any one of claims 3 to 5, characterized in that: The configuration information of the uplink wake-up signal also includes first information, which includes at least one of the following information: access identifier, network slice group identifier, network slice identifier, emergency service identifier, data wireless bearer identifier, and logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

7. The method according to any one of claims 3 to 6, characterized in that: The configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal or a radio resource control RRC signaling.

8. The method according to any one of claims 1 to 7, characterized in that: After sending the uplink wake-up signal, it also includes: The random access request message is sent to the first cell according to the monitored synchronization broadcast block and / or system information block of the first cell.

9. The method according to any one of claims 1 to 7, characterized in that: After sending the uplink wake-up signal, it also includes: If a first condition is met, sending the random access request message to the first cell; Among them, the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored; and / or, starting the timing from the first time the uplink wake-up signal is sent, determining that a first preset time length is reached, and the synchronization broadcast block and / or system information block of the first cell is not monitored.

10. The method according to any one of claims 1 to 7, characterized in that: After sending the uplink wake-up signal, it also includes: The first condition is met, and the random access request message is sent to the second cell; wherein the first condition includes determining that the maximum number of times the uplink wake-up signal is sent is reached, and the synchronization broadcast block and / or the system information block of the first cell is not monitored; and / or, starting from the first time the uplink wake-up signal is sent, determining that the first preset time length is reached, and the synchronization broadcast block and / or the system information block of the first cell is not monitored; After the random access process is completed, the identifier of the first cell is sent to the second cell.

11. The method according to claim 10, characterized in that The second cell is a cell reselected by the terminal device or a designated cell.

12. The method according to any one of claims 9 to 11, characterized in that: Also includes: Receive third indication information from the first cell or the third cell, the third indication information indicating at least one of the following: time-frequency resource information occupied by the random access request message, the root sequence index of the random access request message, the random access sequence index, or the beam association configuration of the downlink low-power synchronization signal and the random access sequence.

13. The method according to any one of claims 1 to 7, characterized in that: After sending the uplink wake-up signal, it also includes: A random access response message is received from the first cell according to the monitored synchronization broadcast block and / or system information block of the first cell, where the random access response message includes information of the uplink wake-up signal.

14. The method according to claim 13, characterized in that The information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or the sequence index of the uplink wake-up signal.

15. A communication method, characterized in that: The method includes: receiving the uplink wake-up signal, where the uplink wake-up signal is used to wake up the first cell, where the uplink wake-up signal carries first indication information, where the first indication information indicates a desired period of a synchronization broadcast block of the first cell and / or a beam of the synchronization broadcast block; Broadcast a synchronization broadcast block and / or a system information block of the first cell.

16. The method according to claim 15, characterized in that Receiving the uplink wake-up signal includes: The uplink wake-up signal is received by the auxiliary receiver.

17. The method according to claim 15 or 16, characterized in that Before broadcasting the synchronization broadcast block according to the uplink wake-up signal, the method includes: The period of the synchronized broadcast block and / or the index of the synchronized broadcast block is determined according to the first indication information.

18. The method according to any one of claims 15 to 17, characterized in that: The uplink wake-up signal also carries second indication information, and the second indication information is used to indicate at least one of the following: the second cell expected to be awakened, whether the uplink data cache size of the terminal device is greater than or equal to the cache threshold, whether the path loss of the terminal device is greater than or equal to the path loss threshold, or whether the terminal device is a reduced capability device.

19. The method according to claim 18, characterized in that Before sending the uplink wake-up signal, it includes: Configuration information for sending uplink wake-up signals.

20. The method of claim 19, wherein: The configuration information of the uplink wake-up signal includes at least one of the following: waveform information of the uplink wake-up signal, the number of bits carried by a symbol occupied by the uplink wake-up signal, time domain resource information of the uplink wake-up signal, frequency domain resource information of the uplink wake-up signal, the maximum number of transmission times of the uplink wake-up signal, the power climbing step of the uplink wake-up signal, the cache threshold, or the path loss threshold.

21. The method of claim 19, wherein: The waveform information of the uplink wake-up signal indicates that the waveform of the uplink wake-up signal is any one of the following: a coordinated waveform of OOK and OFDM, the multi-carrier ASK, multi-carrier FSK, or OFDM.

22. The method according to any one of claims 19 to 21, characterized in that: The configuration information of the uplink wake-up signal also includes first information, which includes at least one of the following information: access identifier, network slice group identifier, network slice identifier, emergency service identifier, data wireless bearer identifier, and logical channel identifier; the first information is used by the terminal device to determine whether to send the uplink wake-up signal.

23. The method according to any one of claims 19 to 22, characterized in that: The configuration information of the uplink wake-up signal is carried by one of the following: a broadcast message, a downlink low-power synchronization signal, a downlink wake-up signal or a radio resource control RRC signaling.

24. The method according to any one of claims 15 to 23, characterized in that After broadcasting the synchronization broadcast block and / or system information block of the first cell according to the uplink wake-up signal, the method further includes: A random access response message is sent to the terminal device, where the random access response message includes information about the uplink wake-up signal.

25. The method of claim 24, wherein: The information of the uplink wake-up signal includes all or part of the information carried in the uplink wake-up signal sent by the terminal device, or the sequence index of the uplink wake-up signal.

26. A communication device, characterized in that: The method comprises a unit or a module for executing the method according to any one of claims 1 to 14, or comprises a unit or a module for executing the method according to any one of claims 15 to 25.

27. A communication device, characterized in that: include: One or more processors and one or more memories; wherein the one or more memories store one or more programs, and when the programs are executed by the one or more processors, the device executes the method as described in any one of claims 1-14, or executes the method as described in any one of claims 15-25.

28. A readable storage medium, characterized in that: The readable storage medium includes a program, and when the program is executed on a device, the device executes the method according to any one of claims 1 to 14, or executes the method according to any one of claims 15 to 25.

29. A computer program product, characterized in that The computer program product comprises a computer program or instructions, and when the computer program or instructions are executed by a communication device, the method according to any one of claims 1 to 14 is implemented, or the method according to any one of claims 15 to 25 is implemented.

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